Question: In the United States, the National Electric Code sets standards for maximum safe currents in insulated copper wires of various diameters. The accompanying table gives

In the United States, the National Electric Code sets standards for maximum safe currents in insulated copper wires of various diameters. The accompanying table gives a portion of the code. Notice that wire diameters are identified by the gauge of the wire, and that 1 mil = 10-3 in. Find the maximum power dissipated per length in

(a) An 8-gauge wire and

(b) A 10-gauge wire.

Diameter (mils) Gauge Safe current (A) 129 35 102 10 25

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